/*!	 layer_invisible.h
**	 Invisible Layer Class Implementation
**
**	......... ... 2016 Ivan Mahonin
**
**	This package is free software; you can redistribute it and/or
**	modify it under the terms of the GNU General Public License as
**	published by the Free Software Foundation; either version 2 of
**	the License, or (at your option) any later version.
**
**	This package is distributed in the hope that it will be useful,
**	but WITHOUT ANY WARRANTY; without even the implied warranty of
**	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
**	General Public License for more details.
**
*/

#ifndef __SYNFIG_LAYER_INVISIBLE_H
#define __SYNFIG_LAYER_INVISIBLE_H

#include <synfig/layer.h>

namespace synfig
{

/*!	\class Layer_Invisible
**	 Base class for invisible layers
*/
class Layer_Invisible : public Layer
{
protected:
    // Default constructor. Not used directly.
    Layer_Invisible();

public:
    // Renders the layer composited on the context and puts it on the target surface.
    virtual bool accelerated_render(Context context, Surface *surface, int quality, const RendDesc &renddesc, ProgressCallback *cb)const;
    virtual bool accelerated_cairorender(Context context, cairo_t *cr, int quality, const RendDesc &renddesc, ProgressCallback *cb)const;

protected:
    virtual rendering::Task::Handle build_rendering_task_vfunc(Context context)const;
}; // END of class Layer_Invisible

}; // END of namespace synfig

#endif